Re: time issues in 4.0 rc4 on a PC-ENGINES WRAP (SC1100)

theo borm wrote:

<snip>

>>> 1) Running a 4.0 rc 4 kernel on my PC-ENGINES WRAP board causes the 
>>> clock to run approximately 37 times too slow.
>>>
<snip>

>
> Is it safe to draw the conclusion that this is a bug in the kernel?
>

I should have taken the "WARNING: broken TSC disabled" more seriously.


I just discovered a few new sysctls and kernel options ;-)


brouter -> sysctl -w kern.timecounter.hardware=i8254
kern.timecounter.hardware: TSC -> i8254

with a kernel compiled with TIMER_FREQ set to 1189200 makes the system 
clock run correctly, sleep N actually sleep N seconds and ping actually 
ping.

Unfortunately, a kernel compiled with:

options    NO_TSC_TIME
options    TIMER_FREQ=1189200

results in a kernel still using the TSC, which surprises me.

My guess is that soekris NET4501 kernels will also be broken.


I'll post a note in tech-kern.



cheers, Theo